Not all SMM save state sizes equate to having enough stack in the permanent SMM handler. Therefore, ensure 1KiB of stack is available for each cpu's stack. Intel's save state size is 1KiB, but AMD's save state size is only 512. Therefore, decouple save state size from the per cpu stack size. BUG=b:70027919 Change-Id: I54b9e6f3cc0ad6ca3d7b60b2b422b5dc5a78a552 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/22950 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Justin TerAvest <teravest@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>